/*
  * @see ASTVisitor#visit(WhileStatement)
  */
 public boolean visit(WhileStatement node) {
   this.fBuffer.append("while ("); // $NON-NLS-1$
   node.getExpression().accept(this);
   this.fBuffer.append(") "); // $NON-NLS-1$
   node.getBody().accept(this);
   return false;
 }